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If Amazon.com wants a price war, Barnes & Noble is ready to play. The struggling real-world bookseller announced this week that it's offering an 8-gigabyte version of its Nook tablet for the same $199 price point as Amazon's Kindle Fire. Meanwhile, Apple is widely expected to unveil the iPad 3 early next month.

Following and expanding upon the examples of similar programs by American Airlines and Alaska Airlines, United Continental -- the world's largest carrier -- will replace its pilots' heavy flight documents with Apple iPads. Ready to fly the paperless skies?